We recently added new devices to our network environment. Although I thought my settings was right both on Ciscoworks and Switch side, I still got the error message "CM0056 Config fetch failed for tdc-mgmt-02 Cause: CM0204 Could not create DeviceContext for 152 Cause: CM0202 Could not access 172.24.151.35 via SNMP. Action: Check the Read Community string Action: Check if required device packages are available in RME. Action: Check if protocol is supported by device and required device package is installed." when I tried to collect data and configuration. I suspect our current RME version does not support new devices. Our RME version is 4.1, our devices are C2960-24TT and 3750G-24TS-1U.
Thanks for your help!